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Finding the Fourth Proportional to 57,935.50, 79,950.99 and 31,439.50

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Solution

The fourth proportional to 57,935.50, 79,950.99 and 31,439.50 is: 43,386.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,935.50 : 79,950.99 = 31,439.50 : x
  2. Step 2: Convert to fraction form
    57,935.50/79,950.99 = 31,439.50/x
  3. Step 3: Cross multiply
    57,935.50x = 79,950.99 × 31,439.50
  4. Step 4: Simplify right side
    57,935.50x = 2,513,619,150.11
  5. Step 5: Solve for x
    x = 2,513,619,150.11/57,935.50
  6. Step 6: Final answer
    x = 43,386.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.